BSTJ 27: 3. July 1948: Contributors to this Issue.

Contributors to this Issue

W. R. Bennett, B.S., Oregon State College, 1925; A.M., Columbia Uni-
versity, 1928. Hell Telephone Laboratories, 1925-. Mr. Bennett has been
active in the design and testing of multichannel communication systems,
particularly with regard to modulation processes and the effects of nonlinear
distortion. As a member of the Transmission Research Department, he is
now engaged in the study of pulse modulation techniques for sending tele-
phone channels by microwave radio relay.

H. T. Budenbom, B.S.E.E., 1922 and E.E., 1928, Purdue University;
part time postgraduate work at Columbia and New York Universities.
Western Electric Company, Engineering Department, and Bell Telephone
Laboratories since 1922. Wire transmission problems, radio interference
studies, point-to-point communication facilities and aviation radio develop-
ment until 1933. Since 1933 Mr. Budenbom's development work has been
primarily on classified projects, which have included radio direction finder
and various types of radars. His present activities remain primarily in the
field of classified military electronics.

Chaki.es Clos, C.E., New York University, 1927. New York Telephone
Company, plant extension engineering, valuation and depreciation matters,
intercompany settlements and tandem and tool fundamental plans, 1927-47.
Pratt Institute, Evening School, Mathematics Instructor, 1946-48. Bell
Telephone Laboratories, studies on development planning for local and toll
switching systems, 1947-.

Warren A. MARRISON, B.Sc. in Physics, Queen's University, Kingston,
Canada, 1920; M.A. in Mathematics and Physcis, Harvard University, 1921.

Engineering Department, Western Electric Company, 1921-25; Hell Tele-
phone Laboratories, 1925-. Mr. Marrison's work has consisted largely of
the development and applications of precise standards of frequency.

S. A. Schelkunofe, H.A., M.A. in Mathematics, The State College of
Washington, 1923; Ph.D. in Mathematics, Columbia University, 1928. En-
gineering Department, Western Electric Company, 1923-25; Bell Telephone
Laboratories, 1925-26. Department of Mathematics, State College of

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592 BELL SYSTEM TECHNICAL JOURNAL

Washington, 1926-29. Bell Telephone Laboratories, 1929-. Dr. Schel-
kunoff has been engaged in mathematical research, especially in the field of
electromagnetic theory.

Claude E. Shannon, B.S. in Electrical Engineering, University of Michi-
gan, 1936; S.M. in Electrical Engineering and Ph.D. in Mathematics, M.I.T.,
1940. National Research Fellow, 1940. Bell Telephone Laboratories,
1941-. Dr. Shannon has been engaged in mathematical research principally
in the use of Boolean Algebra in switching, the theory of communication,
and cryptography.